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1. 发明授权

US07453246B2 Adaptive PWM pulse positioning for fast transient response 有权
标题翻译：自适应PWM脉冲定位，用于快速瞬态响应
公开(公告)号：US07453246B2
公开(公告)日：2008-11-18
申请号：US11383878
申请日：2006-05-17
申请人： Weihong Qiu , Robert H. Isham , Zhixiang Liang
发明人： Weihong Qiu , Robert H. Isham , Zhixiang Liang
IPC分类号： G05F1/56
CPC分类号： H02M3/156 , H02M3/33507
摘要： An adaptive pulse positioning system for a voltage converter providing an output voltage, the system including a PWM generation circuit, a sensor, and a pulse positioning circuit. The PWM generation circuit generates a PWM signal with PWM pulses for controlling the output voltage of the voltage controller. The sensor senses an output load condition of the voltage converter and provides a load signal indicative thereof. The pulse positioning circuit adaptively positions the PWM pulses based on the load signal. A method of adaptively positioning PWM pulses that are used to control an output voltage of a voltage regulator including generating a series of PWM pulses based on a clock signal, sensing an output load condition, and adaptively shifting the series of PWM pulses based on the output load condition.
摘要翻译：一种用于提供输出电压的电压转换器的自适应脉冲定位系统，该系统包括PWM生成电路，传感器和脉冲定位电路。 PWM生成电路生成PWM信号，PWM脉冲用于控制电压控制器的输出电压。传感器感测电压转换器的输出负载状态，并提供指示其的负载信号。脉冲定位电路根据负载信号自适应地定位PWM脉冲。一种自适应地定位用于控制电压调节器的输出电压的PWM脉冲的方法，包括基于时钟信号产生一系列PWM脉冲，感测输出负载条件，以及基于输出自适应地移位一系列PWM脉冲负载条件。

2. 发明授权

US07868600B2 Adaptive PWM pulse positioning for fast transient response 有权
标题翻译：自适应PWM脉冲定位，用于快速瞬态响应
公开(公告)号：US07868600B2
公开(公告)日：2011-01-11
申请号：US12273441
申请日：2008-11-18
申请人： Weihong Qiu , Robert H. Isham , Zhixiang Liang , Thomas Szepesi
发明人： Weihong Qiu , Robert H. Isham , Zhixiang Liang , Thomas Szepesi
IPC分类号： G05F1/56
CPC分类号： H02M3/33507 , H02M3/156
摘要： An adaptive pulse positioning system for a voltage converter including an adjustable ramp generator, a pulse generator circuit, and a sense and adjust circuit. The adjustable ramp generator has an adjust input and provides a periodic ramp voltage having an adjustable magnitude based on an adjust signal provided to the adjust input. The pulse generator circuit receives the ramp voltage and generates a pulse signal with control pulses for controlling the output voltage of the voltage controller based on the ramp voltage. The sense and adjust circuit senses an output load transient and provides the adjust signal to the adjust input of the ramp generator to adaptively shift the pulse signal in time in response to the output load transient without adding pulses to the pulse signal.
摘要翻译：一种用于电压转换器的自适应脉冲定位系统，包括可调斜率发生器，脉冲发生器电路以及感测和调节电路。可调斜坡发生器具有调节输入，并且基于提供给调节输入的调整信号提供具有可调幅度的周期性斜坡电压。脉冲发生器电路接收斜坡电压，并产生具有控制脉冲的脉冲信号，用于根据斜坡电压控制电压控制器的输出电压。感测和调节电路检测输出负载瞬变，并将调整信号提供给斜坡发生器的调整输入端，以响应于输出负载瞬变自适应地移动脉冲信号，而不向脉冲信号添加脉冲。

3. 发明申请

US20090072807A1 ADAPTIVE PWM PULSE POSITIONING FOR FAST TRANSIENT RESPONSE 有权
标题翻译：自适应PWM脉冲定位快速瞬态响应
公开(公告)号：US20090072807A1
公开(公告)日：2009-03-19
申请号：US12273441
申请日：2008-11-18
申请人： Weihong Qiu , Robert H. Isham , Zhixiang Liang , Thomas Szepesi
发明人： Weihong Qiu , Robert H. Isham , Zhixiang Liang , Thomas Szepesi
IPC分类号： G05F1/565
CPC分类号： H02M3/33507 , H02M3/156
摘要： An adaptive pulse positioning system for a voltage converter including an adjustable ramp generator, a pulse generator circuit, and a sense and adjust circuit. The adjustable ramp generator has an adjust input and provides a periodic ramp voltage having an adjustable magnitude based on an adjust signal provided to the adjust input. The pulse generator circuit receives the ramp voltage and generates a pulse signal with control pulses for controlling the output voltage of the voltage controller based on the ramp voltage. The sense and adjust circuit senses an output load transient and provides the adjust signal to the adjust input of the ramp generator to adaptively shift the pulse signal in time in response to the output load transient without adding pulses to the pulse signal.
摘要翻译：一种用于电压转换器的自适应脉冲定位系统，包括可调斜率发生器，脉冲发生器电路以及感测和调节电路。可调斜坡发生器具有调节输入，并且基于提供给调节输入的调整信号提供具有可调幅度的周期性斜坡电压。脉冲发生器电路接收斜坡电压，并产生具有控制脉冲的脉冲信号，用于根据斜坡电压控制电压控制器的输出电压。感测和调节电路检测输出负载瞬变，并将调整信号提供给斜坡发生器的调整输入端，以响应于输出负载瞬变自适应地移动脉冲信号，而不向脉冲信号添加脉冲。

4. 发明授权

US07489121B2 Compensation offset adjustment scheme for fast reference voltage transitioning 有权
标题翻译：用于快速参考电压转换的补偿偏移调整方案
公开(公告)号：US07489121B2
公开(公告)日：2009-02-10
申请号：US11395909
申请日：2006-03-31
申请人： Weihong Qiu , Robert H. Isham , Zhixiang Liang
发明人： Weihong Qiu , Robert H. Isham , Zhixiang Liang
IPC分类号： G05F1/40
CPC分类号： H02M3/156
摘要： A PWM control circuit for a voltage regulator including a compensation network, a ramp generator providing a ramp voltage, an offset adjust circuit and a comparator circuit. The compensation network senses the output voltage, receives a reference voltage, and outputs a compensation voltage. The offset adjust circuit adjusts a selected one of the ramp voltage and the compensation voltage based on the reference voltage. The comparator circuit compares the compensation voltage with the ramp voltage and provides a PWM signal for controlling the output voltage. The offset adjust circuit may generate an offset voltage based on the reference voltage and a gain G of the voltage regulator. The offset adjust circuit may subtract the offset voltage from either the ramp voltage or the compensation voltage to provide an adjusted voltage to the comparator circuit.
摘要翻译：一种用于包括补偿网络的电压调节器的PWM控制电路，提供斜坡电压的斜坡发生器，偏移调整电路和比较器电路。补偿网络感测输出电压，接收参考电压，并输出补偿电压。偏移调整电路根据参考电压调整斜坡电压和补偿电压中选择的一个。比较器电路将补偿电压与斜坡电压进行比较，并提供用于控制输出电压的PWM信号。偏移调整电路可以基于参考电压和电压调节器的增益G产生偏移电压。偏移调整电路可以从斜坡电压或补偿电压中减去偏移电压，以向比较器电路提供经调整的电压。

5. 发明授权

US07453250B2 PWM controller with dual-edge modulation using dual ramps 有权
标题翻译： PWM控制器采用双路斜坡调制
公开(公告)号：US07453250B2
公开(公告)日：2008-11-18
申请号：US11318081
申请日：2005-12-23
申请人： Weihong Qiu , Zhixiang Liang , Robert H. Isham , Ben A. Dowlat , Rami Abou-Hamze
发明人： Weihong Qiu , Zhixiang Liang , Robert H. Isham , Ben A. Dowlat , Rami Abou-Hamze
IPC分类号： G05F1/00
CPC分类号： H02M3/1584 , H02M3/1588 , H02M2001/0025 , H02M2003/1566 , Y02B70/1466
摘要： A dual-edge modulation controller including first and second ramp circuits, first and second comparators, an error amplifier and pulse control logic. The first ramp circuit provides a leading-edge ramp synchronous with a clock. The error amplifier compares a feedback signal with a reference and provides a compensation signal. The first comparator compares the leading-edge ramp with the compensation signal and asserts a set signal. The second ramp circuit provides a trailing-edge ramp that begins ramping when the set signal is asserted. The second comparator compares the trailing-edge ramp with the compensation signal and asserts a reset signal. The pulse control logic asserts a PWM signal when the set signal is asserted and de-asserts the PWM signal when the reset signal is asserted. The controller may control multiple phases with current balancing. The slew rate of the ramps may be adjusted based on the number of PWM signal asserted.
摘要翻译：包括第一和第二斜坡电路，第一和第二比较器，误差放大器和脉冲控制逻辑的双边缘调制控制器。第一个斜坡电路提供与时钟同步的前沿斜坡。误差放大器将反馈信号与参考值进行比较，并提供补偿信号。第一个比较器将前沿斜坡与补偿信号进行比较，并置位一个置位信号。第二斜坡电路提供一个后沿斜坡，当设定信号被断言时开始斜坡。第二个比较器将后沿斜坡与补偿信号进行比较，并确定复位信号。当置位信号置位时，脉冲控制逻辑置位PWM信号，并在复位信号置位时取消置位PWM信号。控制器可以通过电流平衡控制多个相。斜坡的转换速率可以根据断言的PWM信号的数量进行调整。

6. 发明授权

US08085017B2 Pulse adding scheme for smooth phase dropping at light load conditions for multiphase voltage regulators 有权
标题翻译：用于多相稳压器在轻负载条件下平滑相位降低的脉冲加法方案
公开(公告)号：US08085017B2
公开(公告)日：2011-12-27
申请号：US12873102
申请日：2010-08-31
申请人： Weihong Qiu , Robert H. Isham , Chun Cheung
发明人： Weihong Qiu , Robert H. Isham , Chun Cheung
IPC分类号： G05F1/595
CPC分类号： H02M3/1584 , H02M2001/0032 , H02M2001/0041 , H02M2003/1586 , Y02B70/16
摘要： A pulse control system for a multiphase regulator including an error amplifier, a multiphase generator, and an adaptive controller. The error amplifier provides an error signal indicative of output voltage error. The multiphase generator develops modulation pulses for phases based on the error signal. The adaptive controller is responsive to a load indication signal and redirects at least one modulation pulse from a first of phase to a second phase. The load indication signal may be received from a microprocessor indicating a low power mode. The adaptive controller provides a smooth and efficient transition to low load conditions by dropping operation of one or more phases and redirecting modulation pulses to the remaining one or more phases, and reduced phases improve power efficiency for the low load conditions.
摘要翻译：一种用于多相调节器的脉冲控制系统，包括误差放大器，多相发生器和自适应控制器。误差放大器提供指示输出电压误差的误差信号。多相发生器根据误差信号产生相位调制脉冲。自适应控制器响应于负载指示信号并将至少一个调制脉冲从第一相重定向到第二相。可以从指示低功率模式的微处理器接收负载指示信号。自适应控制器通过丢弃一个或多个相的操作并将调制脉冲重定向到剩余的一个或多个相位来提供对低负载条件的平滑和有效的转换，并且降低的相位提高了低负载条件下的功率效率。

7. 发明申请

US20100320977A1 PULSE ADDING SCHEME FOR SMOOTH PHASE DROPPING AT LIGHT LOAD CONDITIONS FOR MULTIPHASE VOLTAGE REGULATORS 有权
标题翻译：用于多相电压调节器的轻负载条件下的平滑相位抖动的脉冲增加方案
公开(公告)号：US20100320977A1
公开(公告)日：2010-12-23
申请号：US12873102
申请日：2010-08-31
申请人： Weihong Qiu , Robert H. Isham , Chun Cheung
发明人： Weihong Qiu , Robert H. Isham , Chun Cheung
IPC分类号： G05F1/00
CPC分类号： H02M3/1584 , H02M2001/0032 , H02M2001/0041 , H02M2003/1586 , Y02B70/16
摘要： A pulse control system for a multiphase regulator including an error amplifier, a multiphase generator, and an adaptive controller. The error amplifier provides an error signal indicative of output voltage error. The multiphase generator develops modulation pulses for phases based on the error signal. The adaptive controller is responsive to a load indication signal and redirects at least one modulation pulse from a first of phase to a second phase. The load indication signal may be received from a microprocessor indicating a low power mode. The adaptive controller provides a smooth and efficient transition to low load conditions by dropping operation of one or more phases and redirecting modulation pulses to the remaining one or more phases, and reduced phases improve power efficiency for the low load conditions.
摘要翻译：一种用于多相调节器的脉冲控制系统，包括误差放大器，多相发生器和自适应控制器。误差放大器提供指示输出电压误差的误差信号。多相发生器根据误差信号产生相位调制脉冲。自适应控制器响应于负载指示信号并将至少一个调制脉冲从第一相重定向到第二相。可以从指示低功率模式的微处理器接收负载指示信号。自适应控制器通过丢弃一个或多个相的操作并将调制脉冲重定向到剩余的一个或多个相位来提供对低负载条件的平滑和有效的转换，并且降低的相位提高了低负载条件下的功率效率。

8. 发明授权

US07812581B2 Pulse adding scheme for smooth phase dropping at light load conditions for multiphase voltage regulators 有权
标题翻译：用于多相稳压器在轻负载条件下平滑相位降低的脉冲加法方案
公开(公告)号：US07812581B2
公开(公告)日：2010-10-12
申请号：US11954888
申请日：2007-12-12
申请人： Weihong Qiu , Robert H. Isham , Chun Cheung
发明人： Weihong Qiu , Robert H. Isham , Chun Cheung
IPC分类号： G05F1/595
CPC分类号： H02M3/1584 , H02M2001/0032 , H02M2001/0041 , H02M2003/1586 , Y02B70/16
摘要： A multiphase regulator which includes an output node developing an output voltage, a feedback circuit determining error of the output voltage and providing a compensation signal indicative thereof, at least three phase circuits coupled in parallel to the output node, and an adaptive controller. Each phase circuit includes a modulation circuit and a switch circuit. Each modulation circuit receives the compensation signal and generates pulses on a corresponding one of the pulse modulation signals. Each switch circuit is coupled to the output node and is controlled by a corresponding pulse modulation signal. The adaptive controller is responsive to a load indication signal, such as indicating a low load condition, and drops operation of at least one of the phase circuits and adds at least one pulse to a pulse modulation signal of each remaining phase circuit.
摘要翻译：多相调节器，其包括产生输出电压的输出节点，确定输出电压的误差的反馈电路，并提供指示其的补偿信号，与输出节点并联耦合的至少三相电路以及自适应控制器。每相电路包括调制电路和开关电路。每个调制电路接收补偿信号并在对应的一个脉冲调制信号上产生脉冲。每个开关电路耦合到输出节点并由对应的脉冲调制信号控制。自适应控制器响应诸如指示低负载状况的负载指示信号，并且降低至少一个相位电路的操作，并且将至少一个脉冲添加到每个剩余相位电路的脉冲调制信号。

9. 发明授权

US08188721B2 Active pulse positioning modulator 有权
标题翻译：有源脉冲定位调制器
公开(公告)号：US08188721B2
公开(公告)日：2012-05-29
申请号：US12492397
申请日：2009-06-26
申请人： Robert H. Isham , Weihong Qiu
发明人： Robert H. Isham , Weihong Qiu
IPC分类号： G05F1/40
CPC分类号： H03K7/08 , H02M3/156 , H02M3/1584 , H03K7/04
摘要： An adaptive pulse positioning modulator including a sense circuit which provides a compensation signal indicative of output voltage error, a filter circuit having an input receiving the compensation signal and an output providing an adjust signal, a leading ramp circuit which provides a repetitive first leading edge ramp signal having a slope which is adjusted by the adjust signal, a comparator circuit which provides a first start trigger signal when the first leading edge ramp signal reaches the compensation signal and a first end trigger signal when a first trailing edge ramp signal reaches the compensation signal, a trailing ramp circuit which initiates ramping of the first trailing edge ramp signal when the first start trigger signal is provided, and a pulse control logic which asserts pulses on a PWM signal based on the trigger signals.
摘要翻译：一种自适应脉冲定位调制器，包括提供表示输出电压误差的补偿信号的检测电路，具有接收补偿信号的输入端和提供调整信号的输出端的滤波器电路，提供重复的第一前沿斜坡信号具有通过调节信号调整的斜率;比较电路，当第一前沿斜坡信号达到补偿信号时提供第一起始触发信号，当第一后沿斜坡信号达到补偿信号时提供第一起始触发信号，当提供第一启动触发信号时启动第一后沿斜坡信号的斜坡的拖尾斜坡电路，以及基于触发信号在PWM信号上断言脉冲的脉冲控制逻辑。

10. 发明授权

US08018367B2 N-bit ADC reader 有权
标题翻译： N位ADC读卡器
公开(公告)号：US08018367B2
公开(公告)日：2011-09-13
申请号：US12631998
申请日：2009-12-07
申请人： Chun Cheung , Weihong Qiu , Robert H. Isham , Mir Mahin
发明人： Chun Cheung , Weihong Qiu , Robert H. Isham , Mir Mahin
IPC分类号： H03M1/12
CPC分类号： H03M1/20 , G01R27/14
摘要： An integrated circuit has a single input pin for determining a value associated with a resistor divider. First circuitry determines a resistor ratio of the resistor divider through the single input pin. A first register stores a first group of bits representing the resistor ratio. The first group of bits represents the least significant bits of the value. Second circuitry determines an equivalent resistance of the resistor divider through the single input pin. A second register stores a second group of bits representing the equivalent resistance.
摘要翻译：集成电路具有用于确定与电阻分压器相关联的值的单个输入引脚。第一个电路通过单个输入引脚确定电阻分压器的电阻比。第一寄存器存储表示电阻器比率的第一组位。第一组位表示该值的最低有效位。第二个电路通过单个输入引脚确定电阻分压器的等效电阻。第二寄存器存储表示等效电阻的第二组位。

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